[mythtv-users] Black screen after idle
Jim Abernathy
jfabernathy at gmail.com
Sun Aug 16 23:25:35 UTC 2020
On 8/16/20 6:57 PM, DryHeat122 wrote:
> I recently upgraded to Ubuntu 18.04/Myth 31. I leave the frontend
> running all the time and just turn off the monitor when I'm not
> watching anything. Twice now, the following has happened. After the
> system has sat idle for some time (overnight this time) I turn on the
> monitor and the screen is black. I cannot change to a terminal window
> with ctl-alt-F2. However, I can SSH to the myth box from another
> machine and issue terminal commands just fine. Rebooting fixes the
> problem. I have all the screen-saver and sleep functionality turned
> off, and the monitor works fine on other inputs, so I don't think it's
> either of those things.
>
> I have searched the black screen symptom and the threads I find (for
> example this one
> <https://askubuntu.com/questions/1085807/black-screen-after-installation-of-ubuntu-18-04>)
> are about this problem happening at boot, not after the machine has
> been sitting idle for some time. It also doesn't happen
> consistently, maybe twice in the last couple weeks.
>
> Has anyone experienced this problem before? Any pointers for how to
> fix or troubleshoot? Thanks......Steve
I've fought this problem off and on for many years and releases of
*buntu and mythtv.
IMHO it's a linux problem. too many things control the power options. On
some systems I install the screensave and then disable it. On others I
use the power settings. Generally I've found that I enable the
screensaver but set the time to never works the best.
There are just too many things that seem to have access to control the
screen off and on.
I have on occasions control-alt-F1 then logged in and restarted lightdm
to fix it without rebooting. sudo systemctl restart lightdm
Jim A
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